Oscillating device



i Vor# KHQN" l 2,296,319

. oscILLATING DEVIGE Filed April 18, 1941 i ATToRNYs bin.

Patented Sept. 22, 1942 UNiTED s. f-Ars oscILLA'nNG nevica y Henry VonKohorn, New York, N. Y.

`Arl'mlication April 18, 1941, Serial No. 389,118 1o claims. (ci.242-43) The present invention relates to an improved means for producingan oscillating motion.

The 'main object of my invention is to pro- Y vide an improved means forimparting an oscilswinging or reciprocating motion, I shall for the'purpose of illustration, describe my' invention as applied to anoscillating thread guide used in` winding bobbins or the like,'but it`should be understood that I do not ,'wish to be limited thereby.

Inwinding bobbins, the thread beforerbeing wound on the bobbin, isusually led through aI guide, which guide is reciprocated so that the`bobbin may be uniformly wound. However, in

the usual guide generally in use, the saidguide is so reciprocated thatvat the end of the stroke there is a pause, duringwhich time the guidereverses its' direction. Because this pause is usually unduly long.` thebobbin is not uniformly wound and bulges occur at each end of the bob-The disadvantages of these bulges are obvious;

Such bulges" are undesirable and actually very harmful in the treatmentof a thread or yarn on the bobbins, such as washing, drying, bleaching,dyeing, steaming and other operations. In View ofthe fact'that at thesebulges the thickness of the package of yarn is greater, the treatingtime must be based on the treating time required by the package at thesebulges. While, for example, it may be sufficient to bleach a package ofyarn of adeiinite thickness for two hours; the bulgeswhich may havetwice the thickness `would require four hours in order to 'be--fu11ybleached. But if the whole package is subjected to four hours ofbleaching, most of the yarn will have been attached and destroyed bytheactiony oi' the bleaching solution.

It istherefore the main object of my invention to provide ameans whichwill wind a bobbin uniformly throughout, Without the presence of anyundesirablebulges. l

Another object-of myinvention is to provide i a means which maybe easilyand simply secured .to the present types of winding apparatus, whichmeans will" remedy' any bulges which might otherwise'be formed on thewound bobbins.

Other objects of my invention will be set forth in the followingdescription and drawing which illustrate preferred embodiments thereof,it being understood that the above statement of the objectsof myinvention is intended generally to explain the same without limiting itin any man- Fig. 1 is a front view of thread guiding means as generallynow in use;`

Figs. 2 and 3 are front views of thread guiding means in differentpositions of the stroke, said vthread guiding means embodying `oneembodiment of my improvement; l

Fig. 4 is a different type of thread guiding means now in use; Figs. 5and 6 show my device as applied to thread guiding means illustrated inFig. 3;

Figs. 'IV and 8 illustrate another embodiment of my device;

Fig. 9 is a frontview of still another embodiment;

Fig. 10 is a sectional'view of the bobbin as presently wound;

' of my device; and

Fig. 15 is a front view thereof.

Referring to the drawing, in the usual type of bobbin Winding means, abobbin 4 having a winding v5 is rotated about its longitudinal axisand-a thread or yarn I4 is led through a guide member, which guidemember is reciprocated along the length of the'bobbin, thus depositing`the thread along the entire outer face of the bobbin. A guide 8is-usually positioned at the end of a pendulum 1 or arm I3, whichpendulum or arm is mechanically motivated so as to oscillate orreciprocate, the length of said oscillation being slightly less than thelength of the bobbin to be wound. This oscillation is usually a simpleharmonic motion, or at most a motion in which there is a substantialstop at both ends of thestroke, and it is quite obvious that due to thisstop, since the bobbin rotates at a,A

uniform speed, more thread will be wound at the end of the bobbin, thuscausing the undesirable bulges 3. i

I have found that by reducing the time of stop` at the end of the strokeof said guide 8the bulges left.

the lower end of the pendulum 1, said point 9 being at an intermediatepoint on the arm I0. At the other end of the arm I is a weight I2. I somount the guide II, arm I 0 and weight I2 so that the guide I I is atthe lowermost position and at the lighter end of the arm II), and thearm I0 is restricted to pivotally swing about point 9 within apredetermined arc.

The device would operate as follows:

As the bobbin is rotated and thread is fed through the guide II, thependulum `1 oscillates or swings back and forthv (see Figs. 2 and 3). Asit approaches the right uppermost point in its swing, the weight I2 isin lagging position and the guide II is in the leading position. Whenthe pendulum l stops to reverse its motion, since the weight I2 has themotion imparted to it by the swinging pendulum T, said weight I2continues to move in the original direction,l thus causing the arm IIJto rotate clockwise around point 9, and the guide II to move towards theIt is obvious that this motion is directly reversed as the pendulum isat the other end of its swing. Thus, the time of stop of the guidemember II is greatly reduced, therefore eliminating the uneven windingof the bobbin Il and the resultant bulges 3.

In Figs. 5 and 6, I show an arrangement similar to that shown in Figs. 2and 3, but as applied to a guide member which moves along the length ofthe bobbin by means of the reciprocating rod I3. The operation of theguide II mounted on the lighter end of arm I0, and weight I2 is similarto that shown in Figs. 2 and 3.

Figs. 7, 8 and 9 merely show my device illustrating how the swing of thearm I0 is limited. In the embodiment shown in Figs. 7 and 8, theswinging pendulum 1 is a hollow tube and has pivotally mounted thereinthe arm I0, one end of said second arm being rotatable about a In Figs.14 and 15 I have shown still another embodiment of my device. In thisembodiment, an arm I0 is pivotally mounted by means of a weight 9 withinthe forked end of the pendulum A 1, the upper end of said arm beingsufliciently weighted. Springs I6 are connected by means c-f pins I8 toeach side of the swinging arm I0, the other ends of said springs beingsecured by means of pins I1 to the pendulum. These springs merely act asa buffer for the arm I0 So that when it does reverse its direction,there will be no jarring.

y larm moves in a direction opposite to that of the oscillating arm whensaid oscillating arm approaches the end of its stroke, and travels in.the same direction as the oscillating arm the remainder of the stroke.

` 2. A device of the character described, comprising an oscillating arm,a second arm pivotally mounted on said oscillating arm, saidsecond armbeing so mounted that the free end thereof will move in a directionopposite to that of the oscil.

lating arm when said oscillating arm approaches the end of its stroke,and travels in the same direction as the oscillatingv arm the remainderof the stroke.

3. A device of the character described, comprising a swinging arm, asecond arm pivotally mounted on said swinging arm, said second arm beingfreely rotatable about a point below its center of gravity.

4. A device of the character described, comprising a swinging arm, asecond arm` freely swingably mounted on said rst swinging arm, saidsecond arm being pivoted about a point below the center of gravitythereof, vthe swing of said second arm being restricted within apredetermined arc.

5. A device as claimed in claim 4, in which a thread guide member isprovided at the lower free end of the second swinging arm.

6. A device of the character described, comprising a swinging tubularmember, an arm pivotally mounted within said tubular member, said armbeing freely swingable about a point below its center of gravity, thelower end of said arm projecting below the lower end of said tubularmember.

7. A device as claimed in claim 6, in which a thread guide member isprovided at the lower end of said rotatable arm.

8. A device of the character described, comprising a reciprocating arm,a second arm freely swingably mounted on said reciprocating arm, pointbelow the center of gravity thereof.

9. A device of the character described, comprising an oscillating arm,said oscillating arm having a forked end, a second arm pivotally mountedbetween the legs of said forked end, said second arm being swingableabout an axis passing below the center of gravity of said second arm, apair of springs, one end of each spring being secured to the upper endof the swingable arm, the other end of each spring being secured to theoscillating arm.

10. An oscillating device for producing an oscillating motion withreduced dead stop at the end of the stroke and change of direction, com?prising at a point on said oscillating arm a second arm pivotallymounted on said oscillating arm about a point removed from the center ofgravity of said second arm, the lighter end of said sec- `ond armcarrying a guide so that when at the end of the stroke of theoscillating armsaid oscillating arm reverses its direction the heavierend of the second arm continues for a moment on its original path due toits inertia, swinging around the point on which it is mounted andchanging its relative position to the oscillating arm and therewith theposition of the guide at the light end of the second arm abruptly andinstantaneously giving it an impetus in the reversed sense and in adirection opposite to the original direction of the oscillating arm.

y HENRY VON KOHORN.

